Ti-direct, powerful, stereoselective aldol-type additions of esters and thioesters to carbonyl compounds: application to the synthesis and evaluation of lactone analogs of jasmone perfumes
作者:Ryohei Nagase、Noriaki Matsumoto、Kohei Hosomi、Takahiro Higashi、Syunsuke Funakoshi、Tomonori Misaki、Yoo Tanabe
DOI:10.1039/b613544g
日期:——
thiophenyl esters or thioaryl esters with aldehydes and ketones was performed (total 46 examples). The present method is advantageous from atom-economical and cost-effective viewpoints; good to excellent yields, moderate to good syn-selectivity, substrate variations, reagent availability, and simple procedures. Utilizing the present reaction as the key step, an efficient short synthesis of three lactone
进行了有效的TiCl(4)-Et(3)N或Bu(3)N促进的醛和酮与苯和硫代苯基酯或硫代芳基酯的醛醇型加成反应(共46例)。从原子经济和成本有效的观点来看,本发明的方法是有利的。从良好到优异的产率,中等到良好的同选选择性,底物变化,试剂的可获得性和简单的程序。利用本反应作为关键步骤,进行了茉莉花香精的三种内酯[2(5H)-呋喃酮]类似物的有效短合成。其中,顺式茉莉酮的内酯类似物具有独特的香料特性(tabac)。